Food held, cooled, cooked, or reheated outside safe temperatures, letting dangerous bacteria multiply.
Cleaning chemicals or other toxic substances unlabeled or stored where they can reach food.
Water not safe, or hot (100°F) and cold water not available under pressure.
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.
Plumbing not installed or maintained properly — leaks, mop sink issues, unserviced water filters, or missing backflow prevention.
Food-contact or nonfood-contact surfaces improperly designed, constructed, maintained, or located.
Shelves, counters, handles, or equipment exteriors soiled with grease, debris, or dust.